I think you could do a good subset of Locale‘s features with the Android Scripting Environment.
The previously noted Silent Night and Droid Tracks provide examples of working with time and location. Nail on a ruleset and polling, you’ve got a useful subset of Locale.

Update: I made a demo of this and called it Judge Droid.

But wait, there's more

• Judge Droid lays down the law
• Android Scripting Environment is heating up
• LibraryDroid tracks your books
• Every Frame a Wallpaper
• UpFuckr Released!

This work by MattK is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International